Quick Help needed on JB4 install

Chris_FL · 03-18-2011, 02:11 PM

installing the plugs into the ECU I didn't realize the slider has to go in half way, put the large plug in without it, obviously it will not push in now, Am I screwed? What to do?

SitDown · 03-18-2011, 02:29 PM

Both sides need the sliders to lock in and fully seat, so put them back on. The ECU will slide up and down, Just pull the ecu up a little to get clearance to open the slider fully and you can then plug and lock it in properly.

Chris_FL · 03-18-2011, 02:56 PM

what I mean is, I put on the larger block without it, so it's like stuck on and if I try to put the slider in, it only goes about 30% of the way in.

lightning20 · 03-18-2011, 03:08 PM

can't you pull it out since the slider is not in to lock it in place?

rmdvrs · 03-18-2011, 03:12 PM

Not sure I understand either. If you didn't put the slider on then it won't lock into place which should allow you to just pull it off. Don't push the slider in while its seated ,just pull the slider back out and pull the large plug out.

It may also be that the plastic case of the ecu box is blocking the slider. So pull on it a little so that the slider can come out and then the plug should just come off.

Chris_FL · 03-18-2011, 03:35 PM

What I did was placed the large box down on the ECU WITHOUT the slider

It's stuck on there, it won't just unplug for some reason.

mid-corner fun · 03-18-2011, 03:40 PM

lift straight up. Nothing should be holding it in place. Without the slider to slide the assembly up you may have to try harder?

rmdvrs · 03-18-2011, 03:50 PM

Quote:

Originally Posted by Chris_FL

What I did was placed the large box down on the ECU WITHOUT the slider

It's stuck on there, it won't just unplug for some reason.

Then there has to be something else that's pinning it down because without the slider it won't lock down and can be pulled off. Maybe you didn't seat it correctly and the pins are stuck. Try looking to see if it's pinned against anything else.

ShyGuy · 03-18-2011, 05:43 PM

Jiggle it around. The large slider takes some moving around to get seated perfectly

bigdaddycane · 03-18-2011, 05:48 PM

make sure the slider(s) piece is NOT upsidedown.

also, you can pull the inner DME box up to give the sliders clearance.

///M3THOD · 03-18-2011, 06:40 PM

There is nothing holding it down, the sliders sole purpose is to secure the connections.

If you installed it without the slider you simply need to slide the actual DME unit up and out slightly to get the proper leverage to remove it. There's a good amount of pins in there so there will be friction, you just need to work it out slowly, pulling straight back.

GL

AC792 · 07-20-2014, 10:02 PM

Bump! What ever happened with this? I just did the same thing and cannot get the ecu to come back out? It is seated properly but the sliders are not in there. What can I do? The car starts and runs fine but I'm nervous about not having them on there.

AC792 · 07-22-2014, 05:19 PM

Anyone?

///Mposter · 07-23-2014, 08:18 PM

Quote:

Originally Posted by Ktm.Moto

Bump! What ever happened with this? I just did the same thing and cannot get the ecu to come back out? It is seated properly but the sliders are not in there. What can I do? The car starts and runs fine but I'm nervous about not having them on there.

I would not recommend eliminating the sliders . Vibration, wheel hop and large speed bumps could cause the connector to become dislodged . Pins and sockets are not made to handle arcing when power is interrupted by the connector coming loose. I recommend you go back over your install and put the slider back in. And I you are having problems getting the large slider on, pull on this white area of the ecu box. Picture coming soon.

///Mposter · 07-23-2014, 08:21 PM

The white box is flexible but you will need a second hand while dealing with the slider . Optionally , push the tabs on the ecu box to remove the DME, then secure the slider, and push the DME back down .

AC792 · 07-29-2014, 11:02 PM

I understand that the sliders should be in, however, I cannot get the small and large box connectors to come off the ECU, so the sliders will not go in right now. Any idea how to get them out? I have tried pulling on them very hard and they don't budge at all.

PsGill · 12-24-2014, 12:33 PM

I have the same problem as this and was wondering how you guys solved it

byebyev8 · 12-24-2014, 03:52 PM

Same here. Its impossible to get it off now it seems like.

Kienvu14 · 12-25-2014, 06:24 PM

Quote:

Originally Posted by byebyev8

Same here. Its impossible to get it off now it seems like.

Try pulling all the connections up and taking the whole ECU out of the tray and wiggle it.

byebyev8 · 12-26-2014, 02:17 AM

I honestly pulled to the point I thought the wires were going to come out of the harness. Even tried using a screw driver with no success. Ive put 3k miles on since, I just don't see it c omming lose ever.

4doorbmwpower · 12-26-2014, 10:48 AM

show me pix of what is happening or not happening ill see if i can help

Chromey · 12-28-2014, 02:19 PM

Just had the same issue with my buddy who installed it. It was a absolute bitch.... In fact even when we had what we thought was the slider locked in it was out 1mm maybe and the car wouldn't start .. It has to be perfect. Use a screwdriver to help pry it out. Careful of course but u need to get it out. Second thing we did was use a little grease on the slider to help as the last knot screw seems to be the issue. It really is just trial and error as each time you try it , it does loosing a bit and make things a bit more friendly. We took over a hour just in that part... Wanted to plug my cobb back in like never before but I think so far the jb4 seems to pull harder, need a few more on map 5 to know.

03-18-2011, 02:11 PM	#1
Chris_FL Private First Class 6 Rep 104 Posts Drives: M4 YMB Join Date: Nov 2010 Location: Tampa, FL iTrader: (1)	Quick Help needed on JB4 install installing the plugs into the ECU I didn't realize the slider has to go in half way, put the large plug in without it, obviously it will not push in now, Am I screwed? What to do?
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03-18-2011, 02:29 PM	#2
SitDown . 8 Rep 247 Posts Drives: Huntin Again... Join Date: Oct 2009 Location: IL iTrader: (0)	Both sides need the sliders to lock in and fully seat, so put them back on. The ECU will slide up and down, Just pull the ecu up a little to get clearance to open the slider fully and you can then plug and lock it in properly.
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03-18-2011, 02:56 PM	#3
Chris_FL Private First Class 6 Rep 104 Posts Drives: M4 YMB Join Date: Nov 2010 Location: Tampa, FL iTrader: (1)	what I mean is, I put on the larger block without it, so it's like stuck on and if I try to put the slider in, it only goes about 30% of the way in.
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03-18-2011, 03:08 PM	#4
lightning20 First Lieutenant 10 Rep 343 Posts Drives: 07 335i sedan Join Date: Jan 2009 Location: Oregon iTrader: (3)	can't you pull it out since the slider is not in to lock it in place?
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03-18-2011, 03:12 PM	#5
rmdvrs Second Lieutenant 13 Rep 202 Posts Drives: 2008 335i coupe Join Date: May 2008 Location: Los Angeles iTrader: (0)	Not sure I understand either. If you didn't put the slider on then it won't lock into place which should allow you to just pull it off. Don't push the slider in while its seated ,just pull the slider back out and pull the large plug out. It may also be that the plastic case of the ecu box is blocking the slider. So pull on it a little so that the slider can come out and then the plug should just come off.
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03-18-2011, 03:35 PM	#6
Chris_FL Private First Class 6 Rep 104 Posts Drives: M4 YMB Join Date: Nov 2010 Location: Tampa, FL iTrader: (1)	What I did was placed the large box down on the ECU WITHOUT the slider It's stuck on there, it won't just unplug for some reason.
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03-18-2011, 03:40 PM	#7
mid-corner fun Lieutenant Colonel 81 Rep 1,510 Posts Drives: F80 M3, '22 X3MC Join Date: Jun 2005 Location: NJ iTrader: (5)	lift straight up. Nothing should be holding it in place. Without the slider to slide the assembly up you may have to try harder?
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03-18-2011, 05:43 PM	#9
ShyGuy Private First Class 4 Rep 167 Posts Drives: BMW 335i Join Date: Apr 2010 Location: Vancouver iTrader: (3)	Jiggle it around. The large slider takes some moving around to get seated perfectly
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03-18-2011, 05:48 PM	#10
bigdaddycane I even mod my cereal 245 Rep 3,441 Posts Drives: 11 ZCP DCT M3 14 328d 21 GT4 Join Date: Aug 2009 Location: Northern Va iTrader: (53) Garage List 2021 Porsche GT4 [0.00] 2014 BMW 328d Xdriv ... [0.00] 2011 BMW M3 [0.00]	make sure the slider(s) piece is NOT upsidedown. also, you can pull the inner DME box up to give the sliders clearance. __________________ 2011 Mineral White M3 ZCP - Opticoat, Ventureshield, some CF, B&B exhaust, AFE Intake Vorsteiner VFF 101s Ohlins 2014 Mineral White 328d Xdrive Wagon - Opticoat, Ventureshield, B8s, H&R, Apex SM-10s Hawk Pads 2021 718 Cayman GT4 - Fire extinguiser
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03-18-2011, 06:40 PM	#11
///M3THOD Lieutenant Colonel 117 Rep 1,625 Posts Drives: 991.2 GTS Join Date: Dec 2009 Location: ATL iTrader: (30)	There is nothing holding it down, the sliders sole purpose is to secure the connections. If you installed it without the slider you simply need to slide the actual DME unit up and out slightly to get the proper leverage to remove it. There's a good amount of pins in there so there will be friction, you just need to work it out slowly, pulling straight back. GL __________________ 2014 Individual /// M5 Competition AW/AB \|\| Vorsteiner FF-103 \|\| BMS JB4 \|\| Meisterschaft GTC \|\| RPI \|\| IND \|\| Challenge \|\|
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07-20-2014, 10:02 PM	#12
AC792 Lieutenant 60 Rep 541 Posts Drives: 2012 F30 335i Join Date: Jan 2012 Location: Milwaukee, WI iTrader: (4)	Bump! What ever happened with this? I just did the same thing and cannot get the ecu to come back out? It is seated properly but the sliders are not in there. What can I do? The car starts and runs fine but I'm nervous about not having them on there. __________________ Now: 2012 F30 335i / 6MT / JB4 / ER Catless DP Sold: 2010 Jeep GC SRT8 Sold: 2007 E90 335i / 6MT / JB4 / Vishnu Exhaust / VMR 710 19" / BMS DCI / HKS Blow Off Valve / Tinted Tails / Clutch Stop
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07-22-2014, 05:19 PM	#13
AC792 Lieutenant 60 Rep 541 Posts Drives: 2012 F30 335i Join Date: Jan 2012 Location: Milwaukee, WI iTrader: (4)	Anyone? __________________ Now: 2012 F30 335i / 6MT / JB4 / ER Catless DP Sold: 2010 Jeep GC SRT8 Sold: 2007 E90 335i / 6MT / JB4 / Vishnu Exhaust / VMR 710 19" / BMS DCI / HKS Blow Off Valve / Tinted Tails / Clutch Stop
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07-23-2014, 08:21 PM	#15
///Mposter Macgyver 208 Rep 942 Posts Drives: 2007 e92 335i Join Date: Jun 2011 Location: Greensboring iTrader: (0)	The white box is flexible but you will need a second hand while dealing with the slider . Optionally , push the tabs on the ecu box to remove the DME, then secure the slider, and push the DME back down . Attached Images __________________ GTX3076R , ADV, JB4, FMIC, BOV, 17"APEX, 255/40/17 SQ, 6-SPD Manual
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07-29-2014, 11:02 PM	#16
AC792 Lieutenant 60 Rep 541 Posts Drives: 2012 F30 335i Join Date: Jan 2012 Location: Milwaukee, WI iTrader: (4)	I understand that the sliders should be in, however, I cannot get the small and large box connectors to come off the ECU, so the sliders will not go in right now. Any idea how to get them out? I have tried pulling on them very hard and they don't budge at all. __________________ Now: 2012 F30 335i / 6MT / JB4 / ER Catless DP Sold: 2010 Jeep GC SRT8 Sold: 2007 E90 335i / 6MT / JB4 / Vishnu Exhaust / VMR 710 19" / BMS DCI / HKS Blow Off Valve / Tinted Tails / Clutch Stop
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12-24-2014, 12:33 PM	#17
PsGill New Member 0 Rep 16 Posts Drives: Bmw 335 Join Date: Nov 2014 Location: Edmonton,Alberta,Canada iTrader: (0)	I have the same problem as this and was wondering how you guys solved it
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12-24-2014, 03:52 PM	#18
byebyev8 Private First Class 81 Rep 185 Posts Drives: e92 335i f12 m6 Join Date: May 2014 Location: Kenosha wi iTrader: (1)	Same here. Its impossible to get it off now it seems like.
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12-26-2014, 02:17 AM	#20
byebyev8 Private First Class 81 Rep 185 Posts Drives: e92 335i f12 m6 Join Date: May 2014 Location: Kenosha wi iTrader: (1)	I honestly pulled to the point I thought the wires were going to come out of the harness. Even tried using a screw driver with no success. Ive put 3k miles on since, I just don't see it c omming lose ever.
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12-26-2014, 10:48 AM	#21
4doorbmwpower Captain 62 Rep 954 Posts Drives: Montego Blue E90 335i Join Date: Nov 2010 Location: North Carolina iTrader: (3)	show me pix of what is happening or not happening ill see if i can help __________________ cp-e GTX3071R TT kit, cp-e quad exhaust, cp-e fuelbar, Stage 3 LPFP+lines, AEM EFI, Custom Meth kit, Apex EC7 18s w/R888 295s, Stoptech, M3 front, m-sport rear, cp-e difuser, Custom Headlights, CFS Radiator, Custom OC, 1000hp Lvl10 trans, DSS Axles, MFactory LSD, DEFIV lockdown kit, M3 refresh kit, KWv2's, cp-e project "4doorbmwpower"
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12-28-2014, 02:19 PM	#22
Chromey Captain 98 Rep 615 Posts Drives: 09 E93 M3 Join Date: Jan 2014 Location: Victoria bc iTrader: (0)	Just had the same issue with my buddy who installed it. It was a absolute bitch.... In fact even when we had what we thought was the slider locked in it was out 1mm maybe and the car wouldn't start .. It has to be perfect. Use a screwdriver to help pry it out. Careful of course but u need to get it out. Second thing we did was use a little grease on the slider to help as the last knot screw seems to be the issue. It really is just trial and error as each time you try it , it does loosing a bit and make things a bit more friendly. We took over a hour just in that part... Wanted to plug my cobb back in like never before but I think so far the jb4 seems to pull harder, need a few more on map 5 to know.
	Appreciate 0 Quote